diff --git a/src/all/cubari/build.gradle b/src/all/cubari/build.gradle
index 335aefa9f..d9c6d33b8 100644
--- a/src/all/cubari/build.gradle
+++ b/src/all/cubari/build.gradle
@@ -6,7 +6,7 @@ ext {
     extName = 'Cubari'
     pkgNameSuffix = "all.cubari"
     extClass = '.CubariFactory'
-    extVersionCode = 17
+    extVersionCode = 18
 }
 
 apply from: "$rootDir/common.gradle"
diff --git a/src/all/cubari/src/eu/kanade/tachiyomi/extension/all/cubari/Cubari.kt b/src/all/cubari/src/eu/kanade/tachiyomi/extension/all/cubari/Cubari.kt
index 0b9d51d06..5c1564dbc 100644
--- a/src/all/cubari/src/eu/kanade/tachiyomi/extension/all/cubari/Cubari.kt
+++ b/src/all/cubari/src/eu/kanade/tachiyomi/extension/all/cubari/Cubari.kt
@@ -183,7 +183,10 @@ open class Cubari(override val lang: String) : HttpSource() {
         val groupMap = groups.entries.associateBy({ it.value.jsonPrimitive.content.ifEmpty { "default" } }, { it.key })
         val chapterScanlator = chapter.scanlator ?: "default" // workaround for "" as group causing NullPointerException (#13772)
 
-        val chapters = jsonObj["chapters"]!!.jsonObject
+        // prevent NullPointerException when chapters.key is 084 and chapter.chapter_number is 84
+        val chapters = jsonObj["chapters"]!!.jsonObject.mapKeys {
+            it.key.replace(Regex("^0+(?!$)"), "")
+        }
 
         val pages = if (chapters[chapter.chapter_number.toString()] != null) {
             chapters[chapter.chapter_number.toString()]!!